<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script src="js/jquery-2.2.3.js" type="text/javascript" charset="utf-8"></script>
		<style type="text/css">
			.lis{
				list-style: none;
				float: left;
				width: 20%;
				height: 100px;
				background: blue;
				color: #FFFFFF;
			}
			.lischeck{
				background: red;
			}
		</style>
	</head>
	<body>
		<div>
			<ul>
				<li class="lis lischeck">1</li>
				<li class="lis">2</li>
				<li class="lis">3</li>
				<li class="lis">4</li>
				<li class="lis">5</li>
			</ul>
			<div class="content">
				
			</div>
		</div>
		
		
	</body>
	<script type="text/javascript">
		$(".lis").on("click",function(){
			$(this).addClass("lischeck")
					.siblings().removeClass("lischeck");
			$(".content").html($(this).html());
		})
	</script>
</html>
